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A heat pump in this county never gets a long rest. Homes in Lauderdale County, MS run heat about five months a year, from November through March. The refrigerant circuit runs in cooling mode through the summer, then the reversing valve flips and the system runs in heating mode through winter, cycling against outdoor temperatures that can fall far enough to push the equipment toward its capacity limits. That is the component a contractor checks first on a repair call here: a reversing valve that has been switching directions season after season without a meaningful break accumulates wear that a valve in a single-season climate simply does not see at the same rate.
Ductwork in a house this old rarely looks the way it was first laid out. Contractors opening a heat pump here find the refrigerant circuit straightforward to read, but the duct runs behind it have been sealed, extended, and rerouted enough times that pressure and airflow tell a different story than the equipment alone suggests. Half the homes in Lauderdale County, Mississippi were built in 1979 or earlier (2020-2024 ACS 5-year). A repair call that looks like a failing component sometimes turns into a duct-loss problem once a contractor gets the system apart, which changes what gets ordered and what the job costs.
The Parts of a Heat Pump a Contractor Checks During Repair
The outdoor unit is usually where a repair call starts. It houses the compressor, which moves refrigerant through the system, and the condenser coil, which sits around it. When the system stops heating or cooling, the compressor and its associated components are among the first things a contractor opens the cabinet to examine.
Inside the house, the air handler holds the evaporator coil and the blower fan that pushes conditioned air through the home. The refrigerant lines run between the two units, and the reversing valve inside the system controls which direction the refrigerant flows. A fault in any of these can produce symptoms that look alike, so a contractor traces the problem through each piece before settling on a cause.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines which components apply to the specific situation in your home.
Find a contractor in Lauderdale CountyLauderdale County by the Numbers
174 severe weather events were recorded in Lauderdale County, Mississippi between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Lauderdale County, Mississippi were built in 1979 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesLauderdale County, Mississippi holds 33,551 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 65.1% of the occupied homes in Lauderdale County, Mississippi (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Behind Heat Pump Repair in Lauderdale County, Mississippi1 sourced rules and standards
Licensing Rules for HVAC Repair in Lauderdale County, Mississippi
Mississippi licenses residential HVAC work at every tier and at any price: a subcontractor of any tier doing heating, ventilation or air conditioning work on a residential construction or improvement project must be licensed by the State Board of Contractors no matter the dollar amount.
Severe Weather Events in Lauderdale County
Weather in Lauderdale County puts a measurable load on heat pump equipment, and that load shapes how often repairs are needed and how hard components work between service calls. A contractor sizing up a repair here is working in local conditions, not abstract ones.
174 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.